Analysis of Slipper Overturning and Collision Behavior of the Axial Piston Pump Based on Rigid-Flexible Coupling

In the working process of the axial piston pump, the composite multi-degree motion of the slipper and its coupling, as well as the complex working conditions, cause the slipper to overturn and collide irregularly with its coupling. The overturning of the slipper leads to partial abrasion of the slipper, and the magnitude of the force generated by direct solid contact between the slipper and the swash plate significantly impacts the wear speed of the slipper. This article is based on the rigid-flexible coupling model of the axial piston pump jointly established by Adams and Ansys. It analyzes the collision relationship between the slipper and its coupling, the overturning behavior characteristics of the slipper, and the variation law in the overturning and collision behavior of the slipper under different spring forces and load pressure, besides, the correlation analysis of the result data is conducted through multiple linear regression method. The research results indicate that the overturning and collision behavior of the slipper exhibits a certain periodicity. Appropriate spring preload and piston chamber oil pressure can effectively reduce the overturning degree of the slipper, reduce the collision strength between the slipper and its coupling, and thus reduce the partial abrasion of the slipper. The research results of this article provide a reference for the wear failure analysis and structural optimization of the slipper.